Question

name: ____________________ date: __________
passive and active transport
directions: write the following terms in the venn diagram where they belong.
uses protein no energy channel protein
high to low uses energy carrier protein
low to high osmosis endocytosis
concentration gradient directly through membrane exocytosis
venn diagram with three circles labeled simple diffusion, facilitated diffusion, active transport
©thebiologybus

Explanation:

Step1: Recall Passive/Active Transport

- **Simple Diffusion (Passive)**: Moves from high to low concentration, no energy, no protein, can go directly through membrane, follows concentration gradient. Osmosis is a type of simple diffusion (water). So terms: No energy, High to low, Concentration gradient, Directly through membrane, Osmosis.
- **Facilitated Diffusion (Passive)**: High to low, no energy, uses protein (channel/carrier), follows concentration gradient. Terms: No energy, High to low, Concentration gradient, Uses protein, Channel protein, Carrier protein.
- **Active Transport**: Low to high, uses energy, uses protein (carrier), against concentration gradient. Also endo/exocytosis (active). Terms: Uses energy, Low to high, Uses protein (carrier), Endocytosis, Exocytosis.
- **Overlap (Simple + Facilitated)**: No energy, High to low, Concentration gradient.
- **Overlap (Facilitated + Active)**: Uses protein.
- **Overlap (All three)**: None (since simple has no protein, active has energy).

Step2: Assign Terms

- **Simple Diffusion Only**: Directly through membrane, Osmosis.
- **Facilitated Diffusion Only**: Channel protein, Carrier protein (wait, no—carrier can be in active too? Wait, facilitated uses channel/carrier (passive), active uses carrier (active). So Facilitated only: Channel protein? Wait, no, let's correct.
- Simple Diffusion (only): Directly through membrane, Osmosis.
- Facilitated Diffusion (only): Channel protein (since carrier can be in active? Wait, active transport uses carrier proteins (like pumps), facilitated uses carrier/channel (passive). So Facilitated only: Channel protein? Or maybe Carrier protein is in both? Maybe the Venn is:
- Simple: No protein, direct, osmosis, no energy, high→low, gradient.
- Facilitated: Protein (channel/carrier), no energy, high→low, gradient.
- Active: Protein (carrier), energy, low→high, endo/exo, gradient? No, active is against gradient.
- So:
- Simple Diffusion circle: Directly through membrane, Osmosis.
- Facilitated Diffusion circle: Channel protein, Carrier protein (wait, no—carrier in active? Maybe the problem considers carrier in facilitated and active? Then:
- Simple: Directly through membrane, Osmosis.
- Facilitated: Channel protein, Carrier protein (passive use).
- Active: Endocytosis, Exocytosis, Low to high, Uses energy.
- Overlap (Simple & Facilitated): No energy, High to low, Concentration gradient.
- Overlap (Facilitated & Active): Uses protein (carrier).
- Overlap (Simple & Active): None.
- Overlap (All three): None.

So to fill:
- Simple Diffusion (only): Directly through membrane, Osmosis.
- Facilitated Diffusion (only): Channel protein (if carrier is in active), or Carrier protein (if not). Wait, maybe the key is:
- Simple: No energy, High→low, Concentration gradient, Directly through membrane, Osmosis.
- Facilitated: No energy, High→low, Concentration gradient, Uses protein, Channel protein, Carrier protein.
- Active: Uses energy, Low→high, Uses protein, Endocytosis, Exocytosis.
- Overlap (Simple & Facilitated): No energy, High→low, Concentration gradient.
- Overlap (Facilitated & Active): Uses protein.
- Overlap (Simple & Active): None.
- Overlap (All three): None.

So terms:
- Simple only: Directly through membrane, Osmosis.
- Facilitated only: Channel protein, Carrier protein (if carrier is passive here).
- Active only: Low to high, Uses energy, Endocytosis, Exocytosis.
- Simple & Facilitated: No energy, High to low, Concentration gradient.
- Facilitated & Active: Uses protein.

Answer:

To fill the Venn diagram:

Simple Diffusion (only):

• Directly through membrane
• Osmosis

Simple Diffusion ∩ Facilitated Diffusion (overlap):

• No energy
• High to low
• Concentration gradient

Facilitated Diffusion (only):

• Channel protein
• Carrier protein

Facilitated Diffusion ∩ Active Transport (overlap):

• Uses protein

Active Transport (only):

• Low to high
• Uses energy
• Endocytosis
• Exocytosis

(Note: The exact overlap may vary based on textbook definitions, but this follows the core concepts of passive (simple/facilitated: no energy, high→low) and active (energy, low→high, plus bulk transport).)